^^i used indoor/outdoor carpet to slide on, you have to get it wet, then i made like an urban drop in thats five feet tall on top of a hill, then a little more down and then a jump, the rail is two 8 foots connected together, and the total cost for the rail and drop in was about 120
^ i made two 8 foot long sections with 4 supports, then connected them together with a 2x4 on both sides to hold it together, the put a ten foot pvc pipes, then a 6 foot, so the transition is smoother. I also made it double pipe
